Sep 2, 2026
Class 1: When a wire stops being a wire
Slide 1 sets up a circuit and asks what the voltage is at each end. Slide 2 answers it at nine frequencies. Both slides turn on one ratio.
EE 330 · Fall 2026
Transmission lines, wave propagation, and the equations underneath them. I start each guide where the lumped circuit model stops working and rebuild the lecture from there.
3 classes
Slide 1 sets up a circuit and asks what the voltage is at each end. Slide 2 answers it at nine frequencies. Both slides turn on one ratio.
Class 1 showed that voltage changes along a wire. Class 2 builds the circuit model that predicts how, turns it into a wave equation, and reads the speed straight off the cable.
Class 2 left a wave equation with two time derivatives in it. Class 3 removes time from the problem, and what falls out is the propagation constant γ, the characteristic impedance Z₀, and a loss figure in decibels.